IT WAS VERY KIND _______ YOU TO HELP MARY WITH HIS HOMEWORK....

câu 20. - BO SUU TAP DE THI THU DAI HOC VA DAP AN
Tiếng Anh BO SUU TAP DE THI THU DAI HOC VA DAP AN

Câu 20. It was very kind _______ you to help Mary with his homework.

A. of B. with C. for

D. to